Send emails when remote wipe starts/finishes

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

1 files changed, 171 insertions, 0 deletions

diff --git a/lib/private/Authentication/Listeners/RemoteWipeEmailListener.php b/lib/private/Authentication/Listeners/RemoteWipeEmailListener.php
new file mode 100644
index 00000000000..be431747389
--- /dev/null
+++ b/lib/private/Authentication/Listeners/RemoteWipeEmailListener.php
@@ -0,0 +1,171 @@
+<?php declare(strict_types=1);
+
+/**
+ * @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
+ *
+ * @author 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Authentication\Listeners;
+
+use Exception;
+use OC\Authentication\Events\RemoteWipeFinished;
+use OC\Authentication\Events\RemoteWipeStarted;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\IL10N;
+use OCP\ILogger;
+use OCP\IUser;
+use OCP\IUserManager;
+use OCP\L10N\IFactory as IL10nFactory;
+use OCP\Mail\IMailer;
+use OCP\Mail\IMessage;
+use function substr;
+
+class RemoteWipeEmailListener implements IEventListener {
+
+	/** @var IMailer */
+	private $mailer;
+
+	/** @var IUserManager */
+	private $userManager;
+
+	/** @var IL10N */
+	private $l10n;
+
+	/** @var ILogger */
+	private $logger;
+
+	public function __construct(IMailer $mailer,
+								IUserManager $userManager,
+								IL10nFactory $l10nFactory,
+								ILogger $logger) {
+		$this->mailer = $mailer;
+		$this->userManager = $userManager;
+		$this->l10n = $l10nFactory->get('core');
+		$this->logger = $logger;
+	}
+
+	/**
+	 * @param Event $event
+	 */
+	public function handle(Event $event): void {
+		if ($event instanceof RemoteWipeStarted) {
+			$uid = $event->getToken()->getUID();
+			$user = $this->userManager->get($uid);
+			if ($user === null) {
+				$this->logger->warning("not sending a wipe started email because user <$uid> does not exist (anymore)");
+				return;
+			}
+			if ($user->getEMailAddress() === null) {
+				$this->logger->info("not sending a wipe started email because user <$uid> has no email set");
+				return;
+			}
+
+			try {
+				$this->mailer->send(
+					$this->getWipingStartedMessage($event, $user)
+				);
+			} catch (Exception $e) {
+				$this->logger->logException($e, [
+					'message' => "Could not send remote wipe started email to <$uid>",
+					'level' => ILogger::ERROR,
+				]);
+			}
+		} else if ($event instanceof RemoteWipeFinished) {
+			$uid = $event->getToken()->getUID();
+			$user = $this->userManager->get($uid);
+			if ($user === null) {
+				$this->logger->warning("not sending a wipe finished email because user <$uid> does not exist (anymore)");
+				return;
+			}
+			if ($user->getEMailAddress() === null) {
+				$this->logger->info("not sending a wipe finished email because user <$uid> has no email set");
+				return;
+			}
+
+			try {
+				$this->mailer->send(
+					$this->getWipingFinishedMessage($event, $user)
+				);
+			} catch (Exception $e) {
+				$this->logger->logException($e, [
+					'message' => "Could not send remote wipe finished email to <$uid>",
+					'level' => ILogger::ERROR,
+				]);
+			}
+		}
+	}
+
+	private function getWipingStartedMessage(RemoteWipeStarted $event, IUser $user): IMessage {
+		$message = $this->mailer->createMessage();
+		$emailTemplate = $this->mailer->createEMailTemplate('auth.RemoteWipeStarted');
+		$plainHeading = $this->l10n->t('Wiping of device %s has started', [$event->getToken()->getName()]);
+		$htmlHeading = $this->l10n->t('Wiping of device »%s« has started', [$event->getToken()->getName()]);
+		$emailTemplate->setSubject(
+			$this->l10n->t(
+				'»%s« started remote wipe',
+				[
+					substr($event->getToken()->getName(), 0, 15)
+				]
+			)
+		);
+		$emailTemplate->addHeader();
+		$emailTemplate->addHeading(
+			$htmlHeading,
+			$plainHeading
+		);
+		$emailTemplate->addBodyText(
+			$this->l10n->t('Device or application »%s« has started the remote wipe process. You will receive another email once the process has finished', [$event->getToken()->getName()])
+		);
+		$emailTemplate->addFooter();
+		$message->setTo([$user->getEMailAddress()]);
+		$message->useTemplate($emailTemplate);
+
+		return $message;
+	}
+
+	private function getWipingFinishedMessage(RemoteWipeFinished $event, IUser $user): IMessage {
+		$message = $this->mailer->createMessage();
+		$emailTemplate = $this->mailer->createEMailTemplate('auth.RemoteWipeFinished');
+		$plainHeading = $this->l10n->t('Wiping of device %s has finished', [$event->getToken()->getName()]);
+		$htmlHeading = $this->l10n->t('Wiping of device »%s« has finished', [$event->getToken()->getName()]);
+		$emailTemplate->setSubject(
+			$this->l10n->t(
+				'»%s« finished remote wipe',
+				[
+					substr($event->getToken()->getName(), 0, 15)
+				]
+			)
+		);
+		$emailTemplate->addHeader();
+		$emailTemplate->addHeading(
+			$htmlHeading,
+			$plainHeading
+		);
+		$emailTemplate->addBodyText(
+			$this->l10n->t('Device or application »%s« has finished the remote wipe process.', [$event->getToken()->getName()])
+		);
+		$emailTemplate->addFooter();
+		$message->setTo([$user->getEMailAddress()]);
+		$message->useTemplate($emailTemplate);
+
+		return $message;
+	}
+
+}